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2012 hot sale Hollow Alumina Spherere Refractory Bricks factory
2012 hot sale Hollow Alumina Spherere Refractory Bricks factory

Hollow Alumina Sphere Refractory Bricks 1,high temperature resistance 2.low thermal conductivity 3. good thermal insulation

  

 Hollow Alumina Sphere Refractory Bricks  

Scope of application

They are widely used in inner linings of various non-contacted melt high temperature kiln and thermal insulating layers of high temperature kilns.

Physical and Chemical Indexes of Hollow Alumina Sphere Bricks

Name / Indexes/ ItemMLQ-1.5LQ-1.2LQ-1.5LQ-1.7

Chemical composition

Al2O3 % ≥8498.598.598.5
Fe2O3 % ≤0.80.30.30.3
SiO2 % ≤151.01.01.0

Bulk density

g/m3≤
1.51.21.51.7

Compressive strength at normal temperature MPa≥

1631215
Porosity % ≥58626058
Soften point at 0.1MPa KD°C≥1650165017001700
Fire resistant (°C)≥1800180018001800
Thermal conductivity Hot side 1000°CW/m.k≤1.20.951.051.15

2012 hot sale Hollow Alumina Spherere Refractory Bricks factory

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